Estimation methods and rate of ontogenetically disharmonic fat component of human body mass in various age and gender groups

Abstract

The research has been carried out within the comprehensive program of obtaining, accumulation and analysis of results using the common conventional and novel techniques. Material of research was the results of direct anthropometry of about 1300 people divided on the basis of the ontogenetic period. Anthropometric research is executed proceeding from V. V. Bunak's chart and meant definition of the general (growth, weight, body surface area), the partial sizes of a human body (longitudinal, volumetric, cross, sagittal) and a skin fat fold thickness. The saved-up results made the reference database which results of development became a basis of the statistical analysis which fragment is given in this article, as well as number of the advanced development. In anthropometry, using the caliper on the back of the shoulder (d1, mm.) measurements were performed at lowered hand in the upper third of the arm triceps, close to its inner edge (the result is recorded on the vertical axis), under shoulder-blade (d2, mm., measurements are performed under the lower angle of the scapula, in an oblique direction: from top to bottom, inside out ) and the side (d3, mm. fold, that measured above the iliac crest (the result is recorded on the vertical axis), on the front surface of the shoulder (d4, mm. it measured in the upper third of the inner surface of the upper arm biceps , in vertical direction). Mean thickness of fatty folds index was calculated using the formula: F1=1,14-0,06xlog2(d1+d2+d3+d4), and general thickness: F2=d1+d2+d3 and determine the absolute amount of fat component (M^) with formula M,A=100x(G5/F.-G,). Further, the evaluation performed by BMFC endomorphic index (MFB ), which is defined by the formula M)KT=G2+G3xF2-G4xF22+G5xF23, considering age and sexual coefficients (G0-G5) and variability (SD) of an endomorphic indicator (MFB±SDFB) and absolute amount of fatty tissue (MFA±SDFA). Results and their discussion. Using the accumulated database, programmed in Excel for each of the patients, the basis of the data of direct anthropometry calculated: index of absolute fat mass (MFA) and endomorphic index (MFB), which allowed determining ontogenetic harmonious relation of fat mass components body, defined relative and absolute frequencies of this phenomenon. Analysis of these data revealed that the frequency of ontogenetic disharmony of fat component of body mass analyzed by ontogenetic periods ranged from 11,0±1,6 % to 30,0±3,0 %, averaging over all persons at 15,4±1,0 %. Among males the lowest frequency of disharmony body weight on his fat component found in the second period of childhood - is 8,4±1,8%, and the highest - 33,3±4,4 % in the first period of adulthood. Among females the highest frequency disharmony of body weight on his fat component found in the first period of adult age - 26,7±4,1 %, whereas in previous ontogenetic periods , this figure has been relatively stable and not significantly different, depending on age. Based on the data, elaborated analytical and numerical models (polynomials) frequency of ontogenetic disharmony of body weight due to fat component, which allows the application to objectify identified patterns and, if necessary, calculate the frequency of ontogenetic are caused chopped disharmony of body weight in fat component by gender (means of traveling power-substitution instead of X - the number you ontogenetic period). Conclusions. On the basis of direct anthropometry the regularities of formation of human body fat at the stages of postnatal ontogenesis have been revealed, which become apparent by different rate of body mass disharmony due to its fat component, especially in comparative aspect of gender groups' ontogenesis. The findings of generalized development of aggregated anthropometric data define the areas of development of traditional methodology of anthropometry, valid advanced methodology, in particular; provides with estimation of ontogenetically disharmonic body build due to body mass fat component. The assessment of ontogenetic disharmony of body mass fat component is assigned to anatomy, topographic anatomy, and other clinical disciplines and can be applied to consideration of peculiarities of body build while assessing the body composition. The findings can explain the age differences as for the rate of initiation of functional disorders, prenosological, as well as nosologically defined pathological conditions as manifestation of general process of growth and development in postnatal ontogenesis.